New formula: vrpn

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/vrpn.rb

@@ -0,0 +1,31 @@
+require 'formula'
+
+class Vrpn <Formula
+  url 'git://git.cs.unc.edu/vrpn.git', :tag => 'version_07.28'
+  version '07.28'
+  homepage 'http://vrpn.org'
+
+  depends_on 'cmake' => :build
+
+  def options
+    [['--clients', 'Build client apps and tests.']]
+  end
+
+  def install
+    args = [ "#{std_cmake_parameters}" ]
+
+    if ARGV.include? '--clients'
+      args << "-DVRPN_BUILD_CLIENTS:BOOL=ON"
+    else
+      args << "-DVRPN_BUILD_CLIENTS:BOOL=OFF"
+    end
+
+    args << ".."
+
+    Dir.mkdir "build"
+    Dir.chdir "build" do
+      system "cmake", *args
+      system "make install"
+    end
+  end
+end